Tube-number record
ML-8038
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ML-8038 is a tube type in the TubeDatabase archive (class: High-Mu Triode). Recorded specifications: brand Machlett, year 1964, construction Triode, maximum plate voltage 125000 V, and maximum plate dissipation 5000 W. The archive does not yet hold a photographed example of this type.
BrandMachlett
ClassHigh-Mu Triode
Construction
Primary TypeTriode
EnvelopeGlass/Metal
SectionsSingle
Filament / Heater
Materialthoriated-tungsten
Absolute Maximum Ratings
Plate Voltage125000 V
Plate Dissipation5000 W
Grid 1 Voltage-1500 V
Cathode Current175000 mA
Audio Performance
Key Features
- Switch tube in hard-tube pulse modulators
- Self-supporting stress-free filament
- Oil convection cooling
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pulse Modulator | 60000 V | — | — | 100 | 115000 mA |
| Pulse Modulator | 100000 V | — | — | 100 | 135000 mA |
| Pulse Modulator | 125000 V | — | — | 100 | 175000 mA |
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